Lifting hook



FIG. 1 is a top, front perspective view of the lifting hook of the present design;

FIG. 2 is a right elevational view thereof;

FIG. 3 is a left elevation view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof. 

CLAIM The ornamental design for a lifting hook, as shown and described. 